/*
 * Copyright 2011 OpenWAF.com
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
/*
 * Original source from Google Web Toolkit(GWT) 
 * http://code.google.com/webtoolkit/
 *
 * Modified to adapt OpenWAF Framework 
 */

/* Original GWT License */

/*
 * Copyright 2008 Google Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package java.util;

class Utility {
  static boolean equalsWithNullCheck(Object a, Object b) {
    if(a == b){
        return true;
    }
    if(a!=null  && b!=null){
        return checkEquals(a, b);
    }
    return false;
  }
  private static native boolean checkEquals(Object a,Object b)/*-{
    try{
       if(a.__hash!=undefined){
            return @java.util.Utility::equals(Ljava/lang/Object;Ljava/lang/Object;)(a,b);
       }
    }catch(e){}
    return false;
  }-*/;
  private static boolean equals(Object a,Object b){
        return a.equals(b);
  }

}
